In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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Iceland has been so culturally isolated through history since the Vikings, that compared to other Scandinavian counties, people who speak Icelandic can still read the old Norsk sagas.
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A cow produces around 200,000 glasses of milk in her lifetime.
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Lurch, a Watusi bull, had the largest horns in the world.
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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